Hand tool



@mmm

March 29, i932.

M., F. POWERS HAND TOOL Filed Nov. 17, 1950 'do for the purpose, ofreleasingthe'plankfrom from thecustomaryangularity of such taper; 70?

"-'' erablefstr'e'sses,'both longitudinal andbend'-, holding `thesertwomembers in endtogend 80 Patented Mar. 29, 19,32 .l Y Y Y ,Y Y,

UNITE-D- FFICEff-f i .MILmoN' PoWERs, on wmcnnsmnn; MAssAonUsE'rTs L Hmmapplicatif@ 'flea VNiterate 1?,"1930; i seriino, 496,9'70,

i Ihis application is a continuationV in party andl thusavoidsz thepossibility of bending* of Amy application; Serial No. 107,047 filed*the lower portion of the tapered'end. f y May 6,1926. Theinventionlrelatesftohand*` One serious draw back to the `one-pieceimpact tools such asnail sets land the like nail set 'iszthe vliabilityof the tool to become VV 5 which areadaptedtobe'held in' one `hand'andlworn or injured at the work-engaging end. struck bya hammer orequivalent'tool'held It'v the workfengaging point is broken oriI'-'theother hand of the 'o'peratc` `r.` f lhefnailv otherwise injured,the .entire'tool must be re- 'set' ordinarily used byf carpenters forvari# placed.' Accordingto thepresentinvention,I

ouspurposes is'custonlarily made inasingle provide a nail set which isequipped with aA 1U piece, which consists oit'j an elongated gripreplaceablework-engaging tip, this beingac- 'ad portion, usuallycylindrical,-taperingat its complished without sacrificing any oit'vthe` lower endto a cup-shaped lterminal of small necessary anddesirablecharacteristics'of the K diamete'rsuitable orengaging'thehead'ofa one-piece nail set.` My improved nail set is nail to set' itbelow the surface ofthewoo'd. (if-rugged constructionand capable lofwith` 15 Among'thecustornary uses to which na'ilset's` standing the hardusage to which a nailset 65;

are put, are the setting of' nails withitheir ,is-'ordinarily subjected.The removable tip Y headsbelow the surface lof the w'ood',the is rigidlyheld'inplacewithoutsacriicing the driving of nail heads'throi'lgh,boards4 or' lcontinuousuniformi-taper ofthe lower portionplanks into whichthenailshave' been driven of thetool'as a.whole,andwithout departing the hold of the nail', the prying'upfofldbw `Avfurther.advantage inherent in my imblefpoint'ed tacks or brads,thelniaking of' provedtoolflies inthe abilityof the-operator hOlesforthestarting of wood? screws ororA toexohange thev nail seti terminalelementffor i other purposes, insertion'thr'ongh4 screw'eyes a prickpunchterminaha pin punch termi- 25y to act as 'alever in Vser'ewing'theeyesinto nal, 011 any Other Ysimilar Work-engaging 75 wood, adjusting;the tension ofd'oorsprings, member'. v Y determining Ythe bores for'lock"spindles, and The improvedtool may consist essentially many 'othervsimilar uses. These varied u's'es ,ofi three separate pieces, a gripportion, a terofnail'sets result in rough usage'"and"consid'-` Ym'inal'j work-engaging element, and asleeve injg. In order to'sinkanail'd'eeplyinto'wood,` 'abulltnglelton- `According to theinven- Y Y Iit is'necessary that a considerable portionjf'ntonythe terminal'elementis partlywithin 'Y the length 0f the' nai] Set be 'Capable' of''folfthesleevela-ndpartly projectinkg` from the lowlowing the nail intothe wood.- For this rael' end hBTGOf, the @K DCSQ SUIRCGS 011th@ l 35son, the lower portion of theV nail set?, varying" Sleeve and ,elementbemg Prefefably fuormd. 85 usually between one-quartera and one-haltet'SQP-S. t0: PFQduCe 'a Substantlauy com lnuous the enuiength of the fooi,is taperedfwifh uniform @Per 0f Standard angularlty. I

a substantially uniform angleof taper of LP- may Semimthe Sleevedtachably to the grlp i y proximately 10o to 15 and without any pr''-`.member by' any Convement means Such as a 4U j ecting shoulders tocatchvon the wood, so that Screw, thread" The large ma] (mty of arpetl'90 the surface 0f this tapered portion hasfafsub`h ie {clisnec t9 h-Olda Ila-11i Set mthelr stantially continuous vtaper throudhout its e l-ancm OI: er O Str] e 1t W11; -alhamn1r length. `This is an important eatlreof the hlchm thi? mici-ight 'ghe gr ptlltlo fooi since it facilitatesthe removal' of the gud fragnjr ellfdl lvgr fetheulft 95 w01 fm@ WoodmtoWhmh .1t haslbeern, driven' hand restingj against the lower tapered por-I Futherrmofe, Whelftilf'nal ,S913 1S --'WEHVUD" tion of the nail set.When using a nail set, d?? fl doubllf'pmllted brgd '60 IGIDOYG the bradthe tendencyof the middle inger'of the left from the wood, the uniformlytapered surhand' is to presstang'entially dn the taperedv .50 face bearsevenly on the' surface of the wood portion ofthe nailiset so asito tendto rotate 100 member.

this portion with respect to the grip portion. If the sleeve of my toolwere attached to the grip portion with a right hand thread, thispressure of the middle finger of the operator on the sleeve would tendto unscrew it, hence l prefer to attach the sleeve to the grip portionwith a left hand thread so that the tangential pressure of the middlefinger of the left hand will tend to set up the sleeve tighter on thegrip portion.

Other advantageous features will be apparent to one skilled in the artfrom the dis-1 closure of the invention in the description which followsand the illustrations thereof on the drawings, of which,

Figure 1 is an elevation of a nail set embodying the invention, y

Figure 2 is a fragmentary elevation of the same, drawn to a largerscale, the sleeve being shown in a section taken on the line 2 2 ofFigure 1.

Figure 3 is similar to Figure 2 but shows a prick punch terminal elementin place of a nail set terminal element.

Figure 4 is similar to Figure 2 except that a pin punch is thereinillustrated.

Figure 5 is an elevation of a nail set having a different form of gripmember.

Figure 6 is a fragment-ary elevation of the nail set shown in Figure 5,the sleeve and terminal element being shown in a section taken on theline 6-6 of Figure 5.

Figure 7 is an elevation of another nail set embodying a slightlymodified form of the invention. 4 Y Y Figure 8 isa fragmentary view ofthe nail set shown in Figure 7, the sleeve and a portion of the terminalelement being shown in section on the line 8-8 of Figure 7.

The nail set illustrated inFigure 1 comprises a grip portion 10 which issubstantially cylindrical in shape and may have a knurled band 11suitably positioned to be gripped by the thumb and fore finger.A Thelower end of the? grip member 10 may be reduced, this lowerportionhaving a threaded portion 412 anda reduced cylindrical portion 13terminating in a flat end face 14. A terminal element 2O abuts the face14 in endto end engagement so that an ample'interfacial contact betweenthegrip member `and the terminal elementis thus provided to transmit theforce of-blows on' the end of the nail set to thev work-engagingextremity. rThe terminal member 20 may be made lwith an upper taperingportion 2l and a lower portion 22 which is more steeply tapered. Theupper portion 21 is adapted to y seat within the inside of a sleeve 23,the upper end portion of which is adapted for threaded engagement withthe portion l2 of-the grip As shown, the wall of the sleeveJ 23 maytaper downwardly in thickness, the inner surface of the lower portion ofthe sleeve having a taper fitted by the upper portion 2l of the'terminalelement. The exterior surface of the sleeve 23 is preferably taperedsimilarly to the lower portion 22 of the terminal element so that thesleeve and the projecting portion of the terminal element present asubstantially continuous and uniformly conical exposed surface whichextends for a substantial fraction of the entire length of the nail set.As shown in Figure 2, the threaded portion 12 of the grip member isreduced in diameter, forming a shoulder 24 at the lower -vextremityvofthe knurled portion 11 against Vlustrated in Figures 5 and 6 issubstantially identical with that illustrated in Figures 1 and 2 exceptfor the shape of the grip member. The grip member 30 illustrated inFigure 5 may have a square cross section, this being preferred by somecarpenters; the lower portion of this grip may be tapered as at 31 andthreadedto receive the sleeve 23. This structure leaves a shoulder 32 atthe upper end of` the sleeve. This shoulder, however, does not interferewith the utility of the tool and is unobjectionable to those who preferasquare grip member.

Figures 7 and 8 illustrate a modilied form Vof* the invention. Astherein shown, a terminal element 35A is provided, this element having atapered lower portion 36 adapted to project below the lower end of thesleeve 37. The portion of the terminal element within thesleeve iscylindrical as at 38, a head or button 39 being provided at its upperend to seat on an internal shoulder 40 of the ksleeve 37. The sleeve37is shaped inside to receive Vthe terminal Velement 35` and to hold thiselement tightly in end to end engagement with the lower end of the gripVportion 41.

The grip member may Lbe of any desired shape. By way of variety,a{iattened grip member is illustrated, the flattened faces being knurled,if desired. l

yThese nail sets are thus capable of hard usage, thevvvork-.engagingtips, which are the portions of the nail set which are first to bebroken or worn, can be easily and quickly replaced with relatively smallexpense, and these results are obtained without sacricing the continuousconical surface of the lower portion ofthe nail set which must extendovera very substantial fraction of the entire length of thenail setifthe tool is to be capable of the uses to fwhichithe ordinary nail set iscustomarily put. y `1 i i f I claim: Y 1.- A nail-set orthe like havinga vwork engaging terminal element with a taperedv y lower portion, anelongated grip member,` and means for removably holding said terminalelement in fixed relation to said grip member, said means engaging theupper por'- tion of the terminal element and having an outersurfaceforming with the lower portion of the terminal element asubstantially continuous conical surface having the lengthv and degreeof taper of the tapered portion of Y an ordinary nail-set.

.2. A nail-set or the like comprising an elongated solid grip member tobe gripped` by digits of a hand, said grip member having a vcontact faceat its lower end, a sleeve detachably mounted on the lower portion ofsaid grip member and projecting therebelow, and a terminal member havinga contact face at its upper end and a work-engaging portion at its lowerend, theupper end portion of said terminal member being normally vengaged by said sleeve so that the two contact faces are held togetherin abuttingen gagement, the lateral surfaces of said sleeve and of thelower end portion of said terminal member forming a substantiallycontinuous conical surface with a length andy degree of tion of saidtool tends to oppose unscrewingv of said sleeve, and a terminal memberhav-v ing an upper portion held within said sleeve in abutting end toend contact with said gripV member, and a lower work-engaging portionprojecting fromsaid sleeve, the exposed Y Y surfaces of said sleeve andterminal memberV forming a substantially continuous conical surfacehaving the length and degree of taper f of the tapered portion of anordinary nail-set. In testimony whereof Ik have aiiiXed my signature.

MILTON F. POWERS. v

like comprising an

